Can't be done without surgery. You gotta deal with what you were given.
There are plenty of pills, lotions, pumps etc out there.
DON'T FALL INTO THAT TRAP!.
Only a pump will enlargen the penis, but you can't do anything with it. It'll just flop there lifelessly It's temporary and not healthy for your sexual future. Don't do this.
You will be at your largest when your are so turned on and it's been awhile since you've emptied your nuts.